Automatic polish feeder



. June 14, 1938 a EED 2,120,868

AUTOMATIC POLISH FEEDER Filed May 11, 1956 2 Sheets-Sheet 1 ATTORNEYS Harr JIZZe d,

June14,1938. H E 2,120,868

AUTOMATIC POLISH FEEDER 'Filed May 11, 1936 2 Sheets-Sfieet 2 ,zayz. i 4:

' I H I jg a aa .V 4/}? LIME I I n/wrs I f BRUSHES I v Harry 6.)?

Patented June 14, 1938' UNITED STATES PATENT OFFICE AUTOMATIC POLISH FEEDER Harry S. Reed, Yakima, Wash.

Application May 11, 1936, Serial No. 79,117

1 Claim. (01. 51-263) This invention relates to automatic polish feeders and has for the primary'object'the provision of a device which is especially adapted for efficiently distributing abrasive to a lens polishing tool or machine or for any other purpose wherein it is desired to have abrasive spread ona surface.

With these and other objects in view this inventionconsists in certain 'novel features of construction, combination and arrangement of parts to be hereinafter more fully described and V ed in accordance with my invention.

Figure 2 is a top plan view illustrating the same.

Figure 3 is a diagrammatical view illustrating a series of feeders operating from a single compressor; and r v Figure 4 is a detail sectional view illustrating the adjustable mounting for the brush.

Referring in detail to the drawings, the numeral l indicates a suitable base on which is mounted a vertically arranged standard 2 carrying a tank or reservoir 3 for containing abrasive and is provided with an outlet valve 4 to which is connected a flexible tube 5.

A distributing brush ii consisting of a brush head '1' carrying bristles 8 and a handle 9 is molded to the head.- The handle 9 is engaged by an adjustable clamp l0 having a swivel connection II to the base i whereby the brush may be moved or arranged in several adjusted positions so as to contact with a surface. Mounted in the head 1 of the brush is a tube l2 one end of which terminates within the bristles 8 while the other end extends outwardly of the head and is connected to a flexible tube I 3. A'Y-shaped coupling I4 is connected to the tube. l3 and t0 i'l mounted on the base I.

the tube 5 and to a tube l5, and the latter is in turn connected to the outlet iii of a compressor A drive shaft I8 is geared to the compressor, as shown at !9, and is connected to an electric motor 20 mounted on the base and equipped with a rheostat 2| for the purpose ofre'gulating speed of rotation of the motor. A fly wheel 22 is secured to the drive shaft I8. j 7

After the brush 6 has been adjusted to a surface, the valve 4 is'opened to permit the abrasive of the tank 3 to pass into the Y M. The compressor l1 driven by the motor 20 forces air into the coupling M which mingles with the abrasive and forces the latter between the bristles of the brush onto the surface. The compressor l1 isv of the type having a reciprocating piston (not shown) so that the'air expelled therefrom will be intermittent to the coupling l4 thereby ejecting the abrasive through the brush onto the surface with intermittent impulses.

A device constructed in accordance with the foregoing will efiiciently distribute the abrasive onto a surface, such as 'a grinding or polishing element of a lens polishing machine or tool and obviates the customary practice of manually placing the abrasive on a surface by a brush operated manually. If desired, a series of abrasive distributors constructed in accordance with the foregoing may be operated from a single compressor, as shown in Figure 3. a

What is claimed is:

An automatic polish feeder comprising a base,

a fountain type brush adjustably mounted on the base, an abrasive supply tank carried by the base, an outlet valve for said tank, a power driven compressor mounted on said base, flexible tubes connected to said valve, compressor and the brush, and a Y-shaped coupling connecting the tubes whereby the contents of the tank may commingle with, air from the compressor and be forced by the air through the brush.

HARRY S. REED. 

